The Cat is 1150 hp and sounds great...but "E" rated. "E"mergency and to be used less than 5% of the time. Continuous is much less than that.
Try any more,and problems that will show up will not be warranty covered because everything (fuel,air,boost,throttle levels,load,temp. etc) goes into the black box/data recorder.

IIRC the MAN's hp is for less than 20% of the time, total hours maybe 1000 hrs a year. IIRC no WOT unless at the rated rpm.

So no firewalling it unless you build up to the rpm. Once again...remember the black box.

Something to remember:
The same engine at 300 hp will last forever, at 500 hp it will last a few seasons and at 1000hp a few fishing trips.

Look at the duty cycle of the engine and the horsepower it is designed for. Many engines are design to be light and be high performance. The 1000hp version will last longer than the tweaked 1200hp.

From their book:
The engines for light duty operation are designed for
a maximum of 1 000 annual operating hours with up
to 20 percent of time at full load, an average of up to
50 percent load application and no wide-open
throttle below rated speed.

As a general principal it is still true. There is also a trend to use alloy engines to save weight, those don't last at all with impeccable maintenance. It is all about lifespan. I like engines that last 10 yearsor more of daily use. Most lightweights won't and can't be rebuilt in frame.

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